Motion-picture-projecting apparatus.



F. H. MAY.

MOTION PICTURE PROJECTING APPARATUS.

APPLICATION FILED APR.18, 1912 1,087,129, v Patented Feb. 17, 1914.

7265565: 0 fizz/W210i:

g 2, W 7f UNITED STATES PA rENT oEEIoE.

FERniNAivn H. MAY, or MoNTcLAiR, NEW JERSEY, ASSIGNOR, BY ivrEsNE Assisi mENTs, To NEW CORPORATION OF NEW JERSEY.

JERSEY PATENT COMPANY, OF WEST ORANGE, NEw EnsEY, A

MOTION-PICTURE-PRb-TECTING APPARATUS.

Specification of Letters ratent. Application filed April 18, 1912. Serial to. 691361.

Patented Feb. 17-, 1914.

To all whom it may concern:

Be it known that I, FERDINAND H. MAY, a citizen of the United States, and a resident of Montclair, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Motion- Picture-Pr'ojecting Apparatus, of which the following is 'a description. I

My invention relates to motion picture projecting apparatus and more especially to the shutter-which passes before the objective to intemittently shut oil the light rays projected therethrough.

The principal object of my invention is to provide a construction insuring the attachment of the shutter as a whole to its operat ing means, always in the same relative angular position with respect thereto, but which permits independent adjustment of the light mtercepting portion or screen of the shutter inorder to compensate for the framing or centering operations of the apparatus so that the light rays will be intercepted only during picture substitution or while the film is in motion. I I

Other objects of my invention will appear more fully in the following description and appended claims. In order that my invention may be more clearly understood reference is made to the accompanying drawings forming a part of this specification, in which the same reference characters are used to designate corresponding parts throughout and in which Figure-1 is a view in side elevation, partly in section of a motion picture projecting apparatus with my improved shutter applied thereto; Fig. 2 is a front elevation partly in section of the device shown in Fig. 1, parts being omitted; and Fig.- 3 is a section on line 3-3 of Fig. 2..

Referring to the drawings, reference character 1 designates a motion picture projecting apparatus of conventional type provided with the usual o 'ajectiveor lens holder2. A rotary shuttershaft 3 is suitably driven from the film op ting mechanism as by gearing 4; to whi :haft'is removably secured the intermittently light intercepting shutter 5. It isoz ten necessary in apparatus of this type to remove the shutter for various reasons, 6. g. for packing the machine and to get at the objective conveniently; and in ma-.

and in adjusting and securing the same to the operating shaft in its previous relative angular position with respectthereto. In order to overcome this objection, I provide a suitable connection, preferably a splined connection, between shaft 3" and shutter 5 which permits of securing the shutter to the shaft in but one relative angular position. This splined connection preferably comprises a slot 6 in shaft 3 and a screw 7 in the hub 8 or shutter 5, the screw 7 having a portion 9 adapted to engage and slidingly fit in slot 6.

Reference character 10 represents the light intercepting portion or screen of the shutter which, as shown, is provided with two apertures 11 although it is of course understood that said screen may have one, three, or more such apertures if desired. Screen 10 is adjustably mounted on hub 9 in any suitable manner. A preferable way of so mounting said screen is to cut away hu 9 so as to form two annular bearing portions 12 and 13 to receive the light intercepting screen 10 and the clamping washer 14 respectively and to provide suitable means, such as screws 15 for connecting hub'9 and washei 14. It is evident that on loosening screws 15 screen 10 may be adjusted angularly to any desired position on hub 9 and on ti htening the screws said screen will be rigidly clamped to said hub by the washer 14. By this adjustable connect-ion between the hub 9 and screen 10 of the shutter I am enabled to correctly position the screen, after a framing or centering operation of the projecting apparatus, .so that the light rays will be intercepted only when the film is being moved during picture substitution. Shutters, as so constructed, may be uickly and easil applied to almost all, if not all types 0 motion picture projection apparatus now in use.

Having now disclosed the nature of my invention and specifically. described one embodiment thereof what I claim and desire to protect by Letters Patent is as follows:

1. In a motion picture projecting apparatus, the combination with a rotary shutter shaft, of a shutter comprisin a hub, an apertured disk adjustable 'anguIarly on said hub, and means for securing said disks to said nub in any desired angular position with respect thereto, said hub and shaft being provided with a splined connection whereby the hub may be secured to said shaft with means cooperating with the slot in the Corrections in Letters Patent No. 1,087,129.

shaft whereby the shutter may be secured to the shaft in but one angular position with respect thereto, substantially as described.

3. In a motion picture projectin apparatus, the combination with a shaft, of a shutter comprising a hub adapted to be secured to said shaft in but one angular posi:

"tion with respect thereto, an apertured disk Witnesses WILLIAM A. HARDY, ANNA R. KLEHM Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patent.

. walhington, D. C.

[SEAL] I It is hereby certified that ih.Letters Patent No.- 1,087,129, granted February 17 1914', upon the application of Ferdinand H. May, of Montclair, New Jersey, for an improvement in Motion-Picture-Projeeting A t errors appear in the printed specification requiring correction as follows: Page 1, line 12, for the word intermittently read intewin'ttently; same page, line 66, for the Word 01- d f; page 2, line 18, after the word one insert the Word relatz'oe; and that the said Letters l atent should be read with these corrections therein that the same ma I conform to the record of the case in the Patent Office.

' Signed and sealed this ion] dayof March A. n, 1914.

R. -'r. FRAZIER, ma Omnmz'ssiomr ofPatente. 

